// import parseTime, formatTime and set to filter
export { parseTime, formatTime } from "@/utils";

/**
 * Show plural label if time is plural number
 * @param {number} time
 * @param {string} label
 * @return {string}
 */
function pluralize(time, label) {
    if (time === 1) {
        return time + label;
    }
    return time + label + "s";
}

/**
 * @param {number} time
 */
export function timeAgo(time) {
    const between = Date.now() / 1000 - Number(time);
    if (between < 3600) {
        return pluralize(~~(between / 60), " minute");
    } else if (between < 86400) {
        return pluralize(~~(between / 3600), " hour");
    } else {
        return pluralize(~~(between / 86400), " day");
    }
}

/**
 * Number formatting
 * like 10000 => 10k
 * @param {number} num
 * @param {number} digits
 */
export function numberFormatter(num, digits) {
    const si = [
        { value: 1E18, symbol: "E" },
        { value: 1E15, symbol: "P" },
        { value: 1E12, symbol: "T" },
        { value: 1E9, symbol: "G" },
        { value: 1E6, symbol: "M" },
        { value: 1E3, symbol: "k" }
    ];
    for (let i = 0; i < si.length; i++) {
        if (num >= si[i].value) {
            return (num / si[i].value).toFixed(digits).replace(/\.0+$|(\.[0-9]*[1-9])0+$/, "$1") + si[i].symbol;
        }
    }
    return num.toString();
}

/**
 * 10000 => "10,000"
 * @param {number} num
 */
export function toThousandFilter(num) {
    return (+num || 0).toString().replace(/^-?\d+/g, m => m.replace(/(?=(?!\b)(\d{3})+$)/g, ","));
}

/**
 * Upper case first char
 * @param {String} string
 */
export function uppercaseFirst(string) {
    return string.charAt(0).toUpperCase() + string.slice(1);
}
